Indicate whether the following statements are true or false by placing a tick (✓) in the appropriate box in each case - Leaving Cert Biology - Question 5 - 2017
Question 5
Indicate whether the following statements are true or false by placing a tick (✓) in the appropriate box in each case.
(a) Aerobic respiration occurs entirely in th... show full transcript
Worked Solution & Example Answer:Indicate whether the following statements are true or false by placing a tick (✓) in the appropriate box in each case - Leaving Cert Biology - Question 5 - 2017
Step 1
(a) Aerobic respiration occurs entirely in the cytosol.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is False. Aerobic respiration primarily occurs in the mitochondria, while glycolysis, which is the initial step of cellular respiration, occurs in the cytosol.
Step 2
(b) Glycolysis is an anaerobic process.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is True. Glycolysis can occur in the absence of oxygen, making it an anaerobic process.
Step 3
(c) None of the energy released in respiration is lost as heat.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is False. Some energy released during respiration is indeed lost as heat, which is a byproduct of metabolic processes.
Step 4
(d) In respiration, all of the ATP molecules are produced in the Krebs cycle.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is False. While the Krebs cycle produces ATP, additional ATP is generated during glycolysis and oxidative phosphorylation.
Step 5
(e) ADP requires an input of energy to produce ATP.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is True. ADP must gain energy to be converted into ATP, typically during cellular respiration.
Step 6
(f) When glucose is fermented by yeast, ethanol and water are formed.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is True. The fermentation of glucose by yeast primarily produces ethanol and carbon dioxide, with water also being a byproduct.
Step 7
(g) Fermentation releases more energy than aerobic respiration.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is False. Aerobic respiration releases significantly more energy than fermentation, as it fully oxidizes glucose to carbon dioxide and water.
Join the Leaving Cert students using SimpleStudy...
